Suction nozzle



E. O. H. HANSSON SUCTION NOZZLE June 4, 1940.

2 Sheets-Sheet 1 Maw I Bf/Z Filed Nov. 25, 1936 INVENTOR. W

444/ ATTORNEY.

June '1940- E. o. H. HANSSON SUGTIONNOZZLE Filed Nov; 25. 1936 2 SheQtSSheet 2 INVENI OR MW ATTORNEY. k

Patented June 4, 1940 My invention PATENT OFFICE SUCTION NOZZLE ErikOskar Helge Hansson,

to Electrolux Corporation,

assigno'r Stockholm, Sweden, Dover, Del.,

a corporation of Delaware Application November 25,

1936, Serial No. 112,624

In Germany November 26, 1935 1 Claim.

relates to vacuum cleaners and more particularly to improved suctionnozzles for use with vacuum cleaners.

One of the objects of my-invention, -1s 5 vide a nozzle includinggularly movable with to. protwo parts which are anrespect to each otherin order that the part including the suction mouthpiece may independenextend in practically any direction tly of the direction ofthe otherpart,

which is conveniently connected to the suction conduit.

A further object vision of a of my invention is the pronozzle of thistype which is of sturdy,

simple and cheap construction and easily assembled.

Further objects and advantages of my invention will'be apparent from thefollowing description considered in connection with the accompanyingdrawings forming part of the specification and of which:

Fig. 1 is a view of a preferred embodiment of my invention in use inconjunction with a vacuum cleaner;

Fig. 2 is suction nozzle shown in Fig.

Fig. 3 is with the parts chiefly in cross-section of a a view of anozzle found in Fig. 2 in a different relative position;

a view,

Figs. 4, 5 and 6 are detailed views of portions of the nozzle shown inFig. 7 is other embodiment of Fig. 8 is with the pa Fig. 9 is bodimentof my Referring fmore particularly to Fig. 1, reference chara cter 9designates a vacuum cleaner unit to which is connected a hollow, rigidsuction conduit I l by means of a flexible hose l0. Se-

cured to the end of conduit H is the nozzle [2 which forms the subjectinvention. Figs. 2

low members l3 at one end with a adapted to of conduit matter of thepresent Referring now more particularly to through 6, the nozzle l2includes two holandv l4. Member 13 is formed tapered bore l5 which isreceive and engage the tapered end H. The other end of member I3 isformed as a hemispherical portion iii, the circular edge of which liesin a plane oblique with of bore 15. Member I4 is similar hemisphericalportion H,

the circular edge of which is likewise disposed in a plane oblique withrespect to the axis. The edge of hemispherical portion I6 is formed witha shoulder l8 which fits within the circular open- (Cl. ass-96,8

ing in hemispherical portion I1, thus preventing radial displacement ofthe two members. The edges of hemispherical portions l6 and I! areretained in contact with each other bymeans of an arcuate resilient bandl9 overlying the exteriors of the hemispherical portions and providedwith projections 20 at either end which engage recesses 2| formed in theexterior of the hemispherical portions, as shown in Fig. 5. The recesses2| are formed at opposite ends of a diameter which extends normal to theplane of the mating-edges of the, hemispherical portions. The band I9 isalso normal to this plane. Consequently, the hemispherical portions arerelatively rotatable with respect to each other about an axis whichcoincides with the above mentioned diaimeter.

The resiliency of band l9 holds the two hemispherical portions togetherin substantially airtight relationship and also permits easy assem bly.To assemble the parts, the band i9 is sprung sufficiently for theprojections 20 to pass over the outer surface of the hemisphericalportions, and its resiliency causes it to contract and engage theprojections 20 within the recesses 2|.

The end of member H opposite from hemispherical portion l6 constitutesanozzle opening 22. Brush bristles 23 surround this opening and are heldwithin a metal retaining ring is disposed partly. within an formed inmember M. A rubber ring 26 is preferably placed around a shoulder 21formed on member l4 and extends downwardly to conceal retaining member24 and also serves to hold the retaining member in the recess 25. Ahollow cylindrical member 28 is preferably disposed within the brushbristles 23 and serves to prevent the bristles from being drawn into thesuction opening 22 by the inflowing air.

i3 and i4 may be retained in any desired position, one, of thehemispherical portions is provided with one or more detents 29 adaptedto be re-" ceived in one of a series of recesses 30 formed in the edgeof the'other hemispherical portion, as is'shown' more particularly inFig. 4. The re;- siliency of band l9 permits the slight separation ofthe two edges necessary for the detent to pass from one recess to thenext. v When the detent is received in a recess, band I! maintains asubstantially air-tight joint between the 24 which annular groove 25 Uthe edge of ators hand. The parts l3 and it of the nozzle may be placedin any desired angular relation to each other. Fig. 1 shows the use ofthe nozzle for cleaning a ledge or moulding disposedabove the operatorshead. As here illustrated, the two parts of the nozzle are rotated to aposition in which the angle between them is less than 90 degrees, thusmaking it possible for the part Id to be in a substantially verticalposition 8.!- though the part l3 and the conduit ll connected theretoextend downwardly from the nozzle.

In the embodiment shown in Figs. 7 and 8, the parts l3 and IE are formedcylindrically with the edges of their mating-ends disposed in a planeoblique to their axis. An outwardly extending flange 35 is providedaround the oblique edge of member 03, while a similar flange 36 isprovided around the edge of member H3. These flanges are retained incontact with each other by means of a channel-shaped resilient ring 31which is split, as is shown at 38 for the purpose of assembly. Means,such as the detent 29 and recess 30 shown in Fig. 4 may be employed toretain the members in any desired angular position.

In the embodiment shown in Fig. 9, the parts l3 and It are formed withhemispherical ends it and E7 in the same manner as described inconnection with the embodiment illustrated in Figs. 1 through 6. Eachhemispherical portion is provided with a groove adjacent to the circularedge and a resilient channel-shaped ring ii, similar to ring 37 shown inFigs. 7 and 8, has its flanges engaging within these grooves. Ring 4iserves to retain the members in rotatable re lation in the same manneras described in connection with the previous embodiment. The innersurfaces of the hemispherical members are aaoaqse provided with ribs 42which are disposed in plane parallel to the air passages formed in theirrespective members. The purpose of these ribs is to reduce swirling ofthe air as it passes through the hemispherical space formed by the twohemispherical portions. This swirling, under certain conditions, resultsin an undesirable noise. The presence of ribs 42 tend to cause the airto pass through the spherical space without swirling.

While I have shown and described three more or less specific embodimentsof my invention, it is to be understood that this has been done forpurposes of illustration only and that the scope of my invention is notto be limited thereby, but

is to be determined by the appended claim viewed in the light of theprior art.

What I claim is: In a suction nozzle including a first member having anair passage adapted to be connected to a source of suction, a secondmember having an air passage communicating with a nozzle opening, eachof said members formed with a hemispherical end having a circular edgein a plane oblique with respect to the respective air passage, means tosecure together said sections in coupled relation comprising an arcuateresilient band overlying said hemispherical ends and removably engagingthe hemispheres at the opposite ends of the diameter normal to the planeof said edges, and means to retain said band in engagement with saidhemispheres to resiliently hold said hemispherical ends together insub-' stantial air-tight relation while permitting them to be pivotedrelative to each other through a relatively wide angle, the resiliencyof said band retaining the edges in abutting contact.

ERIK OSKAR HANSSON.

